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HL: Fachverband Halbleiterphysik

HL 2: Organic-inorganic perovskite semiconductors (with O)

HL 2.5: Vortrag

Montag, 16. März 2015, 10:30–10:45, ER 164

Fluorescence studies on organometal halide perovskite nanoparticles — •Niklas Mutz^1,2, Carlos Cárdenas-Daw^1,2, Ming Fu^1,2, Verena Hintermayr^1,2, Mathias Vollmer^1,2, Jacek Stolarczyk^1,2, Alexander Urban^1,2, and Jochen Feldmann^1,2 — ¹Photonics and Optoelectronics Group, Ludwig-Maximilians-Universität München, Amalienstr. 54 80799 München, Germany — ²Nanosystems Initiative Munich Schellingstraße 4 80799 München, Germany

During recent years organometal halide perovskite based solar cells have shown a significant rise in power conversion efficiency. Despite this improvement in fabricating efficient perovskite solar cells, the underlying photophysical properties are not yet fully understood. An important insight into processes such as charge generation and separation can be obtained by studying single particles instead of disordered films. In this project we investigate the morphology and photoluminescence properties of individual lead halide perovskite particles by varying the chemical synthesis procedure. In particular we investigate their temperature dependent photoluminescence signal and in addition have performed electric field-dependent studies to get insight into the charge separation process.